# Assessment 3 #### What is the primary method used by Bitcoin to achieve consensus in its blockchain network? * [x] Longest chain rule * [ ] One-IP-address-one-vote * [ ] Proof of stake * [ ] Majority vote **Notes to Learners** The consensus is achieved through the longest chain rule, which states that the valid chain is the one with the most accumulated Proof-of-work. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://hub.bsvblockchain.org/higher-learning/bsv-academy/bitcoin-whitepaper-series/section-4-proof-of-work-bitcoin-whitepaper/assessment-3.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.